MERGANSER. NATATORES. MERGUS. 385 
ly three inches beyond the closed wings. Legs and feet 
brown, tinged with red. ‘Tarsus one inch in length. 
The following is a description of the adult male, as given 
by Dr Ricuarpson, in the Fauna Americ. Boreal., and 
which agrees with that of Wrtson in every essential 
particular. 
Top of the head, dorsal plumage, upper small wing-coverts, 
quills and tail, blackish-brown. Sides of the head, neck, 
bars upon the shoulders, scapulars, tertiaries, and bases 
of the secondaries and greater coverts, glossy greenish- 
black. Broad bar behind the eye, through the middle 
of the crest, alternate bars upon the shoulder, tips of 
the greater coverts, exterior borders of the secondaries, 
central stripes on the tertiaries, and under plumage, 
white. Flanks finely undulated with yellowish-brown 
and black. he crest, according to WiLson, is com- 
posed of two separate rows of feathers radiating from 
each side of the head, and which can be easily divided 
by the hand. Irides golden or king’s-yellow. 
SMEW, or WHITE NUN. 
Mercus aceetztus, Linn. 
PHATE WEXE 
Mergus albellus, Linn. Syst. 1. 209. 5.—Gmel. Syst. 1. 547.—Briss. Orn. 
6. 245. 3. t. 24. f. 1.—Lath. Ind. Orn. 2. 831. sp. 6.—Shaw’s Zool. 12. 157. 
pl. 52. Wils. Amer. Orn. 8. 136. pl. 71, f. 4.—Flem. Br. Anim. 1. 129. 
sp. 202. 
Mergus major cirrhatus, Raii Syn. 135. A.— Will. 254. t. 64. 
Le Petit Harle huppé, ou la Piette, Buff Ois. 8. 275.—Id. Pl. Enl. 449.— 
Temm. Man. d’Orn. 2. 887. 
Weisser-sager, Bechst. Naturg. Deut. 4. 804.— Meyer, Tasschenb. 2. 571. 
Smew, or White Nun, Penn. Br. Zool. 2. 559. No. 262.—Lewin’s Br. Birds, 
6. pl. 234.—Lath. Syn. 6. 428 —Id. Sup. 271.--Id. Sup. 2. 338.—Id. in 
Trans. I.inn. Soc. 4. 234. pl. 16. £ 3. and 4. (trachea).—Moné. Orn. Dict. 
and Sup —Pult. Cat. Dorset. 19.—Bewick’s Br. Birds, ed. 1826, p. t. 260. 
—Filem. Br. Anim. 1. 129. sp. 202, &c. 
VOL. II. Bb 
Male. 
